crwdns2934241:0crwdne2934241:0 bobforsberg92630
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My 1990 GMC had a similar problem. I found oxidation on the rear sockets as well as a loss of "holding tension" of the turn signal bulb socket. I cleaned all the socket contacts with Tarn-X and carefully bent the weak socket contacts closer together, gripping the bulb better.
crwdns2915684:0crwdne2915684:0:
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